Bed of Chaos is one of the easiest bosses for me! but of course I do the "fuck it, I'm homeboning this one". perhaps it makes me too casual, but in the end, when I'm at the bed of chaos I am anyway in a hurry to finally face gwyn
Definitely should play Demon's Souls, it's even bleaker and more atmospheric. The main difference for me is the lack of an open world (not a bad thing, just different) and fewer unique weapon animations, otherwise it's equally as good.
Possibly better, because it doesn't have the Bed of Chaos.